KTR-SI. Idle rotation overload systems.

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1 KTR-SI Idle rotation overload systems

KTR-SI FRE Idle rotation overload system KTR-SI FRE Operation of idle rotation elements Ratchet torque [Nm] Changes of ratchet torque between initial and final value <± 10% The core of the overload

2 KTR-SI FRE Idle rotation overload system KTR-SI FRE Operation of idle rotation elements Ratchet torque [Nm] Changes of ratchet torque between initial and final value <± 10% The core of the overload system is formed by the idle rotation elements. In case of overload they uncouple the driving and driven side while protecting the drive train from damages. After eliminating the overload, the rotation segments are manually re-engaged so that the drive is released again. In order to set the coupling to the requested release torque, a defined pre-stress is generated on the disk springs in each idle rotation element via the setting nut. The number of elements varies depending on the release torque demanded. If requested, the coupling can be pre-set by the manufacturer. It is also possible to adapt the coupling while in place. Number of ratchets Re-engaging of idle rotation elements released After eliminating the overload driving and driven side are aligned to each other. By means of a plastic hammer or a lever the rotation segments are re-engaged manually while the re-engagement can clearly be heard. Now the overload coupling is ready for operation again. engaged

KTR-SI FRE Idle rotation overload system KTR-SI FRE Idle rotation overload system (load separating) High repeating accuracy Flange type for the connection of belt pulleys or sprockets To be combined

possible on request) 9 12 15 20 3 elements 6 elements 9 elements Type of element Min. Max.

3 KTR-SI FRE Idle rotation overload system KTR-SI FRE Idle rotation overload system (load separating) High repeating accuracy Flange type for the connection of belt pulleys or sprockets To be combined with ROTEX, GEARex or RADEX-N as a shaft-to-shaft connection The intelligent further development of shear pin couplings and hydraulic clamping sets Setting range up to 60,000 Nm (higher torques possible on request) elements 6 elements 9 elements Type of element Min. Max. Min. Max. Min. Max. 1T T T T T T T T Max. finish bore d Dimensions of flange type Dimensions [mm] D 1 D 2 D 3 D 4 D 5 L l 1 l 2 l 3 l 4 l 5 l 6 M g g 1 g 2 d m z Pitch Perm. max. bearing load [kn] 2) Radial Axial force force , ,3 2, , x , ,3 4, , x , ,3 4, , x , , x15 162,5 80, ) Other sizes available on request 2) Higher forces possible with stronger bearing 3) Higher speeds possible on request Speed3) [1/min] Weight with max. bore [kg] Ordering example: KTR-SI FRE 12 1T3 9 Ø Nm Type/size Type of element Number of elements Bore of KTR-SI FRE Torque set

KTR-SI FRE Idle rotation overload system KTR-SI FRE with ROTEX Idle rotation overload system (load separating) High repeating accuracy The intelligent further development of shear pin couplings and

4 KTR-SI FRE Idle rotation overload system KTR-SI FRE with ROTEX Idle rotation overload system (load separating) High repeating accuracy The intelligent further development of shear pin couplings and hydraulic clamping sets Setting range up to 60,000 Nm (optionally higher torques are possible) Screw tightening torque T A elements 6 elements 9 elements Type of element Min. Max. Min. Max. Min. Max. 1T T T T T T T T Dimensions with ROTEX 1) ROTEX Torque [Nm] Max. finish bore Dimensions [mm] T KN T Kmax d d 1 D 1 D 2 D 3 D 6 D 7 L G L 1 l 1 l 2 l 3 l 4 l 7 l 8 E T A [Nm] Speed 2) [1/min] Weight with max. bore [kg] , , , ) Other sizes available on request 1) Higher speeds possible on request Ordering example KTR-SI FRE T3 9 Ø85 Ø Nm Type/size ROTEX size Type of element Number of elements ROTEX bore Bore of KTR-SI FRE Torque set

5 KTR-SI Overload system Idle rotation coupling (load-separating) Idle-rotation safety clutch for a torque up to 1800 Nm Max. speed up to 5000 rpm (see table) Driving and driven side are permanently separated Manual re-engagement Optional overload recognition by limit switch or sensor Combination with ROTEX coupling as shaft-to-shaft connection Easy assembly and torque setting T [Nm] Torque set Torque curve Operating principle of the KTR-SI idle-rotation couplings: When achieving the torque set, the coupling rotates. Subject to the idle rotation mechanism driving and driven side remain separated. The resulting flywheel mass may run out in idle state. After having removed the overload, the coupling reengages. The re-engagement is effected manually or via a device. No residual torque t [s] Re-engagement of the idle rotation coupling: Re-engagement of the free-rotating coupling is effected by axial pressure on the shifting ring (2). Dependent on the existing media, accessability etc., the re-engagement can be effected in different ways: by several beats with a plastic hammer (3) axially on the shifting ring (see on the left) by mounting levers (4) by a pneumatic or hydraulic engagement device (automated process of engagement) Disk spring layer T1 T2 T Max. speeds [rpm] n max

KTR-SI Overload system Type FT, KT und LT Standard KTR-SI safety clutch up to 8200 Nm Available ready for assembly with the torque set For direct mounting of customers components Available as a

6 KTR-SI Overload system Type FT, KT und LT Standard KTR-SI safety clutch up to 8200 Nm Available ready for assembly with the torque set For direct mounting of customers components Available as a ratchet, synchronous and fail-safe design Torque setting possible while in place Finish bore according to ISO fit H7, feather keyway according to DIN 6885 sheet 1 - JS9 Surface protection by phosphating H=stroke H=stroke H=stroke z = number z = number z = number Type FT Type KT Type LT Dimensions [mm] Bore d H = Hub Pilot bore Max. d 1 D 2 D A d 2 d 3 l 1 l 2 l 3 l 4 l 5 l 7 l 8 L L 1 L 2 z FR , ,0 8,0 6,0 11,5 9 33, ,0 70,0 85,0 6xM5 2, , ,0 10,0 5,0 12,0 9 39, ,0 78,0 100,0 6xM6 3, , ,0 12,0 8,5 21, , ,0 96,0 125,0 6xM8 3, , ,5 15,0 11,0 27,0 9 52, ,0 124,5 152,5 6xM10 1) 3, , ,5 17,0 12,0 33,0 9 57, ,5 140,0 171,0 6xM12 1) 4,5 Disk spring layering T1 T2 T Ordering example: KTR-SI 2 FR FT T2 Ø20 50 Nm Type Design Design Disk springs Bore Torque set

KTR-SI. Idle rotation overload systems.

KTR-SI. Idle rotation overload systems. KTR-SI Idle rotation overload systems www.ktr.com KTR-SI FRE Idle rotation overload system KTR-SI FRE Operation of idle rotation elements Ratchet torque [Nm] Changes of ratchet torque between initial and